/*
 * Wi-Fi Protected Setup - attribute parsing
 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#ifndef WPS_ATTR_PARSE_H
#define WPS_ATTR_PARSE_H

#include "wps.h"

struct wps_parse_attr {
	/* fixed length fields */
	const u8 *version;			/* 1 octet */
	const u8 *version2;			/* 1 octet */
	const u8 *msg_type;			/* 1 octet */
	const u8 *enrollee_nonce;	/* WPS_NONCE_LEN (16) octets */
	const u8 *registrar_nonce;	/* WPS_NONCE_LEN (16) octets */
	const u8 *uuid_r;			/* WPS_UUID_LEN (16) octets */
	const u8 *uuid_e;			/* WPS_UUID_LEN (16) octets */
	const u8 *auth_type_flags;	/* 2 octets */
	const u8 *encr_type_flags;	/* 2 octets */
	const u8 *conn_type_flags;	/* 1 octet */
	const u8 *config_methods;	/* 2 octets */
	const u8 *sel_reg_config_methods;	/* 2 octets */
	const u8 *primary_dev_type;	/* 8 octets */
	const u8 *rf_bands;			/* 1 octet */
	const u8 *assoc_state;		/* 2 octets */
	const u8 *config_error;		/* 2 octets */
	const u8 *dev_password_id;	/* 2 octets */
	const u8 *os_version;		/* 4 octets */
	const u8 *wps_state;		/* 1 octet */
	const u8 *authenticator;	/* WPS_AUTHENTICATOR_LEN (8) octets */
	const u8 *r_hash1;			/* WPS_HASH_LEN (32) octets */
	const u8 *r_hash2;			/* WPS_HASH_LEN (32) octets */
	const u8 *e_hash1;			/* WPS_HASH_LEN (32) octets */
	const u8 *e_hash2;			/* WPS_HASH_LEN (32) octets */
	const u8 *r_snonce1;		/* WPS_SECRET_NONCE_LEN (16) octets */
	const u8 *r_snonce2;		/* WPS_SECRET_NONCE_LEN (16) octets */
	const u8 *e_snonce1;		/* WPS_SECRET_NONCE_LEN (16) octets */
	const u8 *e_snonce2;		/* WPS_SECRET_NONCE_LEN (16) octets */
	const u8 *key_wrap_auth;	/* WPS_KWA_LEN (8) octets */
	const u8 *auth_type;		/* 2 octets */
	const u8 *encr_type;		/* 2 octets */
	const u8 *network_idx;		/* 1 octet */
	const u8 *network_key_idx;	/* 1 octet */
	const u8 *mac_addr;			/* ETH_ALEN (6) octets */
	const u8 *selected_registrar;	/* 1 octet (Bool) */
	const u8 *request_type;		/* 1 octet */
	const u8 *response_type;	/* 1 octet */
	const u8 *ap_setup_locked;	/* 1 octet */
	const u8 *settings_delay_time;	/* 1 octet */
	const u8 *network_key_shareable;	/* 1 octet (Bool) */
	const u8 *request_to_enroll;	/* 1 octet (Bool) */
	const u8 *ap_channel;		/* 2 octets */
	const u8 *registrar_configuration_methods;	/* 2 octets */

	/* variable length fields */
	const u8 *manufacturer;
	size_t manufacturer_len;
	const u8 *model_name;
	size_t model_name_len;
	const u8 *model_number;
	size_t model_number_len;
	const u8 *serial_number;
	size_t serial_number_len;
	const u8 *dev_name;
	size_t dev_name_len;
	const u8 *public_key;
	size_t public_key_len;
	const u8 *encr_settings;
	size_t encr_settings_len;
	const u8 *ssid;				/* <= 32 octets */
	size_t ssid_len;
	const u8 *network_key;		/* <= 64 octets */
	size_t network_key_len;
	const u8 *authorized_macs;	/* <= 30 octets */
	size_t authorized_macs_len;
	const u8 *sec_dev_type_list;	/* <= 128 octets */
	size_t sec_dev_type_list_len;
	const u8 *oob_dev_password;	/* 38..54 octets */
	size_t oob_dev_password_len;

	/* attributes that can occur multiple times */
#define MAX_CRED_COUNT 10
	const u8 *cred[MAX_CRED_COUNT];
	size_t cred_len[MAX_CRED_COUNT];
	size_t num_cred;

#define MAX_REQ_DEV_TYPE_COUNT 10
	const u8 *req_dev_type[MAX_REQ_DEV_TYPE_COUNT];
	size_t num_req_dev_type;

	const u8 *vendor_ext[MAX_WPS_PARSE_VENDOR_EXT];
	size_t vendor_ext_len[MAX_WPS_PARSE_VENDOR_EXT];
	size_t num_vendor_ext;
};

int wps_parse_msg(const struct wpabuf *msg, struct wps_parse_attr *attr);

#endif							/* WPS_ATTR_PARSE_H */
